1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_TYPES_H
3#define _LINUX_TYPES_H
4
5#define __EXPORTED_HEADERS__
6#include <uapi/linux/types.h>
7
8#ifndef __ASSEMBLY__
9
10#define DECLARE_BITMAP(name,bits) \
11 unsigned long name[BITS_TO_LONGS(bits)]
12
13typedef u32 __kernel_dev_t;
14
15typedef __kernel_fd_set fd_set;
16typedef __kernel_dev_t dev_t;
17typedef __kernel_ino_t ino_t;
18typedef __kernel_mode_t mode_t;
19typedef unsigned short umode_t;
20typedef u32 nlink_t;
21typedef __kernel_off_t off_t;
22typedef __kernel_pid_t pid_t;
23typedef __kernel_daddr_t daddr_t;
24typedef __kernel_key_t key_t;
25typedef __kernel_suseconds_t suseconds_t;
26typedef __kernel_timer_t timer_t;
27typedef __kernel_clockid_t clockid_t;
28typedef __kernel_mqd_t mqd_t;
29
30typedef _Bool bool;
31
32typedef __kernel_uid32_t uid_t;
33typedef __kernel_gid32_t gid_t;
34typedef __kernel_uid16_t uid16_t;
35typedef __kernel_gid16_t gid16_t;
36
37typedef unsigned long uintptr_t;
38
39#ifdef CONFIG_HAVE_UID16
40/* This is defined by include/asm-{arch}/posix_types.h */
41typedef __kernel_old_uid_t old_uid_t;
42typedef __kernel_old_gid_t old_gid_t;
43#endif /* CONFIG_UID16 */
44
45#if defined(__GNUC__)
46typedef __kernel_loff_t loff_t;
47#endif
48
49/*
50 * The following typedefs are also protected by individual ifdefs for
51 * historical reasons:
52 */
53#ifndef _SIZE_T
54#define _SIZE_T
55typedef __kernel_size_t size_t;
56#endif
57
58#ifndef _SSIZE_T
59#define _SSIZE_T
60typedef __kernel_ssize_t ssize_t;
61#endif
62
63#ifndef _PTRDIFF_T
64#define _PTRDIFF_T
65typedef __kernel_ptrdiff_t ptrdiff_t;
66#endif
67
68#ifndef _TIME_T
69#define _TIME_T
70typedef __kernel_time_t time_t;
71#endif
72
73#ifndef _CLOCK_T
74#define _CLOCK_T
75typedef __kernel_clock_t clock_t;
76#endif
77
78#ifndef _CADDR_T
79#define _CADDR_T
80typedef __kernel_caddr_t caddr_t;
81#endif
82
83/* bsd */
84typedef unsigned char u_char;
85typedef unsigned short u_short;
86typedef unsigned int u_int;
87typedef unsigned long u_long;
88
89/* sysv */
90typedef unsigned char unchar;
91typedef unsigned short ushort;
92typedef unsigned int uint;
93typedef unsigned long ulong;
94
95#ifndef __BIT_TYPES_DEFINED__
96#define __BIT_TYPES_DEFINED__
97
98typedef u8 u_int8_t;
99typedef s8 int8_t;
100typedef u16 u_int16_t;
101typedef s16 int16_t;
102typedef u32 u_int32_t;
103typedef s32 int32_t;
104
105#endif /* !(__BIT_TYPES_DEFINED__) */
106
107typedef u8 uint8_t;
108typedef u16 uint16_t;
109typedef u32 uint32_t;
110
111#if defined(__GNUC__)
112typedef u64 uint64_t;
113typedef u64 u_int64_t;
114typedef s64 int64_t;
115#endif
116
117/* this is a special 64bit data type that is 8-byte aligned */
118#define aligned_u64 __aligned_u64
119#define aligned_be64 __aligned_be64
120#define aligned_le64 __aligned_le64
121
122/**
123 * The type used for indexing onto a disc or disc partition.
124 *
125 * Linux always considers sectors to be 512 bytes long independently
126 * of the devices real block size.
127 *
128 * blkcnt_t is the type of the inode's block count.
129 */
130#ifdef CONFIG_LBDAF
131typedef u64 sector_t;
132typedef u64 blkcnt_t;
133#else
134typedef unsigned long sector_t;
135typedef unsigned long blkcnt_t;
136#endif
137
138/*
139 * The type of an index into the pagecache.
140 */
141#define pgoff_t unsigned long
142
143/*
144 * A dma_addr_t can hold any valid DMA address, i.e., any address returned
145 * by the DMA API.
146 *
147 * If the DMA API only uses 32-bit addresses, dma_addr_t need only be 32
148 * bits wide. Bus addresses, e.g., PCI BARs, may be wider than 32 bits,
149 * but drivers do memory-mapped I/O to ioremapped kernel virtual addresses,
150 * so they don't care about the size of the actual bus addresses.
151 */
152#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
153typedef u64 dma_addr_t;
154#else
155typedef u32 dma_addr_t;
156#endif
157
158typedef unsigned __bitwise gfp_t;
159typedef unsigned __bitwise slab_flags_t;
160typedef unsigned __bitwise fmode_t;
161
162#ifdef CONFIG_PHYS_ADDR_T_64BIT
163typedef u64 phys_addr_t;
164#else
165typedef u32 phys_addr_t;
166#endif
167
168typedef phys_addr_t resource_size_t;
169
170/*
171 * This type is the placeholder for a hardware interrupt number. It has to be
172 * big enough to enclose whatever representation is used by a given platform.
173 */
174typedef unsigned long irq_hw_number_t;
175
176typedef struct {
177 int counter;
178} atomic_t;
179
180#ifdef CONFIG_64BIT
181typedef struct {
182 long counter;
183} atomic64_t;
184#endif
185
186struct list_head {
187 struct list_head *next, *prev;
188};
189
190struct hlist_head {
191 struct hlist_node *first;
192};
193
194struct hlist_node {
195 struct hlist_node *next, **pprev;
196};
197
198struct ustat {
199 __kernel_daddr_t f_tfree;
200 __kernel_ino_t f_tinode;
201 char f_fname[6];
202 char f_fpack[6];
203};
204
205/**
206 * struct callback_head - callback structure for use with RCU and task_work
207 * @next: next update requests in a list
208 * @func: actual update function to call after the grace period.
209 *
210 * The struct is aligned to size of pointer. On most architectures it happens
211 * naturally due ABI requirements, but some architectures (like CRIS) have
212 * weird ABI and we need to ask it explicitly.
213 *
214 * The alignment is required to guarantee that bit 0 of @next will be
215 * clear under normal conditions -- as long as we use call_rcu(),
216 * call_rcu_bh(), call_rcu_sched(), or call_srcu() to queue callback.
217 *
218 * This guarantee is important for few reasons:
219 * - future call_rcu_lazy() will make use of lower bits in the pointer;
220 * - the structure shares storage space in struct page with @compound_head,
221 * which encode PageTail() in bit 0. The guarantee is needed to avoid
222 * false-positive PageTail().
223 */
224struct callback_head {
225 struct callback_head *next;
226 void (*func)(struct callback_head *head);
227} __attribute__((aligned(sizeof(void *))));
228#define rcu_head callback_head
229
230typedef void (*rcu_callback_t)(struct rcu_head *head);
231typedef void (*call_rcu_func_t)(struct rcu_head *head, rcu_callback_t func);
232
233#endif /* __ASSEMBLY__ */
234#endif /* _LINUX_TYPES_H */
235